Cop or yarn-package.



s. W. WARDWELLJ GOP OR YARN PACKAGE.

- APPLICATION FILED JUNE 23. 1906. 903,643. Patented Nov. 10, 1908.

8 SHEETS-SHEET l.

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A TTOR/Yf Y5 -S.'W. WARDWELL. cor. 0R YARN'PAOKAGE. APPLICATION FILEDJUNE 23. 1906.

Patented Nov. 10, 1908.

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/N VEN TOR mflaw ATTORNE Y3 W/QT/VESSES 1; mmms PETERS co, wnsumawu, 04c.

S. W. WARDWELL. GOP 0R YABN. PACKAGE. APPLIOATIONLIILED mm 2a. 1906.

Patented Nov. 10,1908. 3 SHEETS-SHEET 8.

ATTORNE YQ THE NORRIS PETERS co, WASHINGTON, b. c.

or traverse, see Figs. 2 and 3.

SIMON W. WARDWELL, OF PROVIDENCE, RHODE ISLAND.

GOP OR YARN-PACKAGE Specification of Letters Patent.

Patented nom'io, 1908.

Application filed June 23, 1906. Serial No. 323,137.

To all whom it may concern:

Be it known that I, SIMON W. IVARDWELL, a citizen of the United States,residing in Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Oops orYarn-Packages, of which the following is a specification.

My invention is a cop for use in loom shuttles and for other purposeswhere a maximum quantity of yarn within a given space is essential, andwhere said yarn must be delivered over one end of a non-rotatablepackage, rather than by unrolling from a rotatable supply.

The purpose of my invention is to build a taper nosed cop without havingrecourse to a formed plug or core on which to start the cop, and toutilize all available yarn space by building the cop with asubstantially fiat base instead of a tapered one like mule cops andsimilar yarn packages, and further to produce a cop that can becontinuously and completely unwound without having a residue of yarnunused.

The accompanying drawings illustrating my invention show, respectively:Figure 1, a side view of the cop showing its general form; Fig. 2, alongitudinal section; Fig. 3, the first layer in the cop; Fig. i, thesecond layer in the cop; Fig. 5, the third layer in the cop; Fig. 6, aside view of a modification of the cop showing another method of layingthe coils; Fig. 7 the first layer of this method of winding; Fig. 8, alongitudinal section of the cop; Fig. 9, a longitudinal section ofanother modification showing a different method of disposing the firstlayers.

The essential feature of the invention is the formation of a conical ortapered yarn mass having a substantially fiat base, upon the surface ofwhich the subsequent layers are started in the same plane, advancinggradually in the direction of the axis of the winding. To efiect this,the winding is preferably started with a layer of short length hen thishas attained a certain thickness, the length of traverse is increased sothe yarn mass is given a stepped form, as shown in Fig. 4:. When thesecond layer has reached its predetermined thickness, the traverse isagain lengthened, producing the result shown in Fig. 5. The traverse,besides being lengthened with each layer, also has its position relativeto the winding spindle changed slightly so that the winding of eachlayer subsequent to the first layer is started at a point slightly awayfrom the starting end of the layer next preceding. The result of this isto give the end or base of the cop a slight batter or convexity. It willbe evi dent, however, that the end of the cop might be built upperfectly straight, but it has been found preferable to give it thisslight batter to make the cop more stable, the coils being less liableto fall over the base and prevent unwinding, which would cause waste.\Vinding is continued in the fashion described until the full length oftraverse is attained, which occurs when the base of the cop reaches itspredetermined diameter. A conical or tapered yarn mass is now formed,the innermost layers having a stepped formation, but, as layer uponlayer has been added, the steps, where they overlap, have been graduallyfilled in and become less distinct, resulting in an outer surface withonly a slight wavy character, as shown in sectional View, Fig. 2. Afterthe conical yarn mass has been completed, the length of traverse ismaintained uniform, but its relation to the spindle, longitudinally ofits axis, is changed, either continuously or intermittently, so that thecop is caused to increase in size by longitudinal extension rather thanby diametrical growth. In other words, the traverse advances graduallyalong the spindle so that, while a uniform diameter of the cop ismaintained, its length is increased constantly by the addition of theoverlapping frusto-conical layers.

In Fig. 9 I illustrate my mode of building up the base portion of thecop in connection with a reverse disposition of the layers, that is, thelongest layer is disposed first on the core and the successive layersare shorter instead of longer, as in Fig. 2, but with a like result,that is, a substantially flat base and a conical shaped face. Theminimum length of traverse is reached when the base of the cop hasattained its predetermined diameter, and at this point the traverse islengthened to its full extent and advanced slightly, done on the surfaceof the cone and continued as before described.

In Fig. 1, the cop is shown as produced by depositing the yarn by whatis new technically known as the universal system of winding in whicheach layer consists of two thicknesses of crossed helices. To effectthis the winding now being.

style of winding throughout the entire cop, it is necessary that,whatever the length of traverse, the number of spindle rotations pertraverse must be such as to'insure'the proper lay of the material woundto deposit each helix of a given direction close beside the nextpreceding tion. This can obviously be accomplished in, various ways. Forexample, the number of Winds might,other conditions admitting, be fourin all layers, in wliichcasethe'wind ing spindle would niake'fo'urrotations per each traverse of the guide, plusthe slight fractionalrotation for gain. In this case, the rate of traverse might be constant,and the rate per minute" of spindle rotation diminished with each changein length of traverse, or therate per i rotation might be constant andthe rate of traverse in lineal units per minute be increased with eachchange" in length of tra'v erse. Oi", the number of winds in each layermight be varied without reference to other layers, and in a proportionin no'way dependent on or related to the number of winds in any onelayer. But I prefer to wind the'imp'r'ov'ed copaccording to a naturalsequence and progression, maintaining the rate per minute of spindlespeed uniform, and so varying the length of traverse asto secureadefinite increase in number of winds for each length of traverse. Fig. 3shows the first layer of one wind. Fig. 4 showsthe second layer twice aslong, of two winds. Fig. 5, the third layer of three winds. That is, ofcourse, the simplest and most eflicient mode of operation, permitting aconstant rotative speed at the highest possible rate, and, therefore,the highest rate of production. y

In the cop illustrated in Figs. 1 and 2, there being eight layers in thecore, then the last layer will be wound with eight winds, and thischaracter of winding continues throughout the remainder of the cop,showing on the nose when the cop' is completed. V I

I The advantages of my invention are not confined to a cop wound withthe Universal or close wind traverse, but this same manner of copbuilding is advantageous with what is known as open wind, as shown in F6, or spool wind, or again with indis} criminate and haphazard wind,where the yarn is deposited by no systematic method; because it providesa yarn core or base which is part of the cop and unwindable with it, andtherefore increasing its yarn capacity.

n important feature of the improved cop is the systematiclaying oftheconcentric cylindrical layers which are de'positedupon the core inbuilding up the solid base with a I ering or conical forward end. Itwill be evident that these layers must be systematic helix of the samedirecn inute' of spindle increased as successive layers were depositedupon it, with the result that instead of a regularly formed base, thebase would be of such a character as would not properly support thesucceeding layers constituting the cylindrical body portion. Adistinguishing feature also ofthe cop is the regular and systematiclaying of' the yarn in each" of the successive conical layers"constituting the body portion, which ares'o formed and laid t'hat the"yarn in onenyer is in advance of every portion of the yarn in the preceding' layer, so' that upon the delivery of the yarn in unwinding it isimpossible for the" yarn, as it passes from the cop, to be retarded byengagement with any portion of the underlying nia'ss'. I do not herehowever claim this arrangement of the successive conical layers, as thesame is set forth in a companion application Serial No. 284,752.

It will also be understood that the ad'van tages of my invention are notconfined to a cop of the dimensions shown, but the same method ofbuildingthe conical core of yarn might be applied to a cophaving adiameter equal to or approximating its axial length, and othermodifications in size might be made, Therefore, without limiting myselfto the recise form of package'o'r exact dis-' position of its substance,

I claim: p 1. A cop having a cylindrical body and a tapering nose, andwith a base consisting of a succession of cylindrical concentricsystematically laid layers, each outer layer longer than the precedinglayer and stepped forward of theinner layer at the rear.

2. A cop having a cylindrical body and a tapering nose, and with a baseconsisting of a succession of cylindrical concentric systematically laidlayers, each outer layer longer than the preceding layer and steppedforward of the inner layer at the rear, the body portion consisting ofsuccessive layers of substantially conical form, all portions of theyarn in each conical layer being forward of all corresponding portionsof the yarn in the preceding layer. v y o V p 3; A cop having acylindrical body and a tapering nose, and with a base consisting of asuccession of cylindrical concentric sy s tematically laid layers, eachouter layer longer than the preceding layer and stepped forward of theinner layer at the rear, the body portion consisting of successivelayers of substantially conical form, the yarn in each layer disposed inopen crossed helices and each layer being forward of the pre'cedinglayer. 4 p

4. A (3013 having a "ylindrical body and a tapering nose with a baseconsisting of a succession ofv cylindrical, concentric system'aiticallylaid layers, each outer layer of different length from the precedinglayer successive windings of yarn forward of such 10 and stepped forwardof the inner layer at end. the rear. In testimony whereof I have signedmy 5. A cop having a base consistingof a sucname to this specificationin the presence cession of cylindrical, concentric systematof twosubscribing Witnesses.

ically laid layers, each extending further SIMON WARD\VELL. forward thanthe next adjacent layer, the Witnesses: whole presenting a substantiallyconical end, CHAS. A. EDDY,

and a cylindrical body portion consisting of ARTHUR I. HARVEY.

